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Finding the Fourth Proportional to 9,915.57, 14,887.53 and 8,697.69

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Solution

The fourth proportional to 9,915.57, 14,887.53 and 8,697.69 is: 13,058.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,915.57 : 14,887.53 = 8,697.69 : x
  2. Step 2: Convert to fraction form
    9,915.57/14,887.53 = 8,697.69/x
  3. Step 3: Cross multiply
    9,915.57x = 14,887.53 × 8,697.69
  4. Step 4: Simplify right side
    9,915.57x = 129,487,120.81
  5. Step 5: Solve for x
    x = 129,487,120.81/9,915.57
  6. Step 6: Final answer
    x = 13,058.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.